适用肌肤：皮肤较黑和偏红的肌肤。
硬度和脆性较黑碳化硅高、磨粒锋利、导热性好。
Harder and more brittle than black silicon carbide, very sharp for grinding and of good heat conductivity.
古代夏朝人被认为可能是非蒙古人种，他们来自于西方的伊朗，可能是皮肤较黑.
The ancient Xia are believed to be a non-Mongoloid western people from Iran, speculated to be the black Chinese .
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